Yellow bananas are fruits on their first stage of ripeness. Their color does not contain dark spots or large dark stripes. These bananas contain a high amount of antioxidants that help the immune system to fight viruses and other harmful microorganisms. Japanese scientists have identified the ability of antioxidants to fight cancer. Therefore, bananas are recommended for cancer patients. Another advantage of this degree of maturation is the effect of fruit on the stomach. So, in addition to the facilitated process of digestion, such bananas reduce the acidity of gastric juice and relieve heartburn.